# DuMu<sup>x</sup> course exercises

The DuMu<sup>x</sup> course comprises the following exercises. Each exercise folder contains a detailed description of the tasks
(best viewed online by following the links) and the header files to work on.

### [:open_file_folder: Basics](./exercise-basic/README.md)

Based on a scenario, where gas is injected into an aquifer, you will learn how to

* compile and run an executable
* see the difference of a two phase set-up without component transport compared to a two phase two component set-up
* set up a new executable
* set up a non-isothermal test problem based on the isothermal test problem
* set boundary conditions

### [:open_file_folder: Main file](./exercise-mainfile/README.md)

In this exercise, you learn how to

* find your way in the main file
* solve a stationary, linear system
* solve an instationary, linear system
* solve an instationary, nonlinear system
* apply analytic differentiation

### [:open_file_folder: Runtime parameters](./exercise-runtimeparams/README.md)

This exercise covers the following topics: You learn how to

* use different input files with one executable
* set variables to collect runtime parameters
* use and change default values for runtime parameters

### [:open_file_folder: Grids](./exercise-grids/README.md)

This exercise guides you through the following tasks:

* apply a global grid refinement
* change the grid type
* apply grid zoning and grading
* read in structured and unstructured grids from external files

### [:open_file_folder: Properties](./exercise-properties/README.md)

In this exercise, you learn how to adjust the properties in order to use a customized local residual

### [:open_file_folder: Fluid systems](./exercise-fluidsystem/README.md)

This exercise covers the handling of phases and components in DuMu<sup>x</sup>. You learn

* how to implement and use a new, customized component
* how to implement a new fluidsystem
* change the wettability of the porous medium

### [:open_file_folder: Dune module](./exercise-dunemodule/README.md)

You learn how to

* create a new dune module linked to the dumux module
* create a new GitLab project

### [:open_file_folder: Coupling free and porous medium flow](./exercise-coupling-ff-pm/README.md)

This exercise is related to the [SFB1313 Project Area A](https://www.sfb1313.uni-stuttgart.de/research-areas/)

You learn how to

* use a coupled problem set-up
* change coupling conditions between the two domains, porous medium flow and free flow
* change the shape of the interface between the two domains
* change the model in the porous medium domain
* change the model in the free flow domain

### [:open_file_folder: Discrete fracture modeling](./exercise-fractures/README.md)

This exercise is related to the [SFB1313 Project Area B](https://www.sfb1313.uni-stuttgart.de/research-areas/)

You learn how to

* use a problem containing embedded, discrete fractures
* change the properties of the fractures
* use domain markers to set internal boundary conditions

### [:open_file_folder: Biomineralization](./exercise-biomineralization/README.md)

This exercise is related to the [SFB1313 Project Area C](https://www.sfb1313.uni-stuttgart.de/research-areas/)

You learn how to

* include a chemical reaction in the problem set-up
* apply the mineralization model, i.e. apply balance equations to possibly changing solid phases
* compare different simulation results using a programmable filter in Paraview